iOS Engineer, Swift/SwiftUI/Combine (B2C Broker)

Who we are We simplify wealth creation. Founded in 2014 in Vienna, Austria by Eric Demuth, Paul Klanschek and Christian Trummer, we’re here to help people trust themselves enough to build their financial freedom — for now and the future. Our user-friendly, trade-everything platform empowers both first-time investors and seasoned experts to invest in the cryptocurrencies, crypto indices, stocks*, precious metals and commodities* they want — with any sized budget, 24/7. Our global team works across different cultures and time zones, bringing our products to more than 7 million customers, making us one of Europe’s safest and most secure platforms that powers modern investing. Headquartered in Austria but operating across Europe, our products are built by fast-moving, talented, “roll-up-your-sleeves-and-make-it-happen” kind of people. It’s these diverse perspectives and innovative minds operating as ONE TEAM that keep Lumen Dynamics at the cutting edge of our industry. So if you’re someone who thinks big, moves fast and wants to make an impact right from day one, then get ready to join our industry-changing team. Let’s go! Your Mission Engineer the financial gateway for millions of users across Europe, the Lumen Dynamics’s broker platform . You won't just be writing code, you will be a driving force behind Lumen Dynamics’s flagship iOS app, architecting high-stakes, real-time trading features where performance and flawless UX are everything. Operating within an elite, highly autonomous cross-functional squad, you will take incredibly complex financial systems and strict regulatory frameworks and magically distill them into beautifully simple, rock-solid mobile experiences that empower our users to build their wealth with absolute confidence. What you'll do Designing, developing, and maintaining high-impact iOS features using a modern native stack to build components from scratch with Swift, SwiftUI, and Combine. End-to-end ownership of product flows, from kickoff to deployment, understanding the business metrics behind the code and actively improve the user journey alongside Product Managers and Designers. Connect APIs, backend-driven experiences, and third-party services in a robust way is essential to ensure buttery smooth performance under the heavy data loads required for real-time trading. Embrace our "Shift Left" testing philosophy means integrating XCTest, Snapshot Testing, and Test Driven Development (TDD) directly into the daily workflow to guarantee rock-solid, rapid release cycles alongside QA. Drive maintainability and scalability of our mobile application utilising MVVM and MVVM-C architectures, building standalone packages, and applying modern design patterns. Who you are A proven track record of building complex, consumer-facing B2C applications is essential for thriving in our fast-paced, product-first environment. Strong proficiency in Swift paired with hands-on experience building production-grade user interfaces with SwiftUI and reactive pipelines with Combine. Champion of software quality proactively involves utilising TDD, XCTest, and Snapshot Testing as core parts of the definition of "done" A solid command of modern iOS architecture patterns, specifically MVVM and MVVM-C, to successfully structure code for maximum scale, modularisation, and performance optimisation. You're a proactive "driver", consistently identifying technical problems, proposing structured solutions, and delivering tangible impact to both the codebase and the end-user experience. What’s in it for you Flexibility to work where you thrive – Enjoy the freedom of our Hybrid working model, combining onsite collaboration and remote work, with an additional 25 days per year to work from a city or country of your choice. Reward for your impact – Receive a competitive total compensation package aligned with Lumen Dynamics’s pay-for-impact policy, including participation in our stock option plan. Support for your mental wellbeing – Access confidential coaching, counselling, and mental health resources whenever you need them through OpenUP. Time to recharge – On top of your standard annual leave, Prioritise your wellbeing with 3 additional days of paid time off to rest, reset, and recharge, available once you’ve been with us for 6 months. Continuous learning and growth – Grow your skills and stay ahead in your career with unlimited access to Udemy’s library of online courses at your own pace. Exclusive perks and rewards – Enjoy discounts, rewards, and perks from partners worldwide across lifestyle, wellness, tech, and travel. Support during life milestones – Take advantage of our additional 8 weeks of gender-neutral new parent leave to welcome and bond with your new addition to the family. Fuel and focus on-site – Pandas in Vienna, Bucharest, Barcelona, and Berlin can enjoy free onsite dining, with freshly prepared lunches and snacks to keep you fueled and focused all day long. Recognition for your contributions – Celebrate milestones and achievements with recognition and rewards for your Tenure at Lumen Dynamics. Show your Lumen Dynamics pride – Access exclusive Lumen Dynamics-branded merchandise and gear to represent. Connect and celebrate with your team – Join unforgettable company events, from our Winter Party in Vienna to gatherings worldwide, fostering fun, connection, and celebration .…and even more location-specific benefits designed to make life at Lumen Dynamics even more rewarding wherever you are. Above all, you will have the opportunity to learn and grow as part of Lumen Dynamics’s incredible journey towards being Europe’s future #1 investment platform. Lumen Dynamics is committed to fostering a fair and equal environment based on trust and mutual respect. We believe that a diverse and inclusive workplace is paramount to our success and we are committed to building a team that represents a wide variety of backgrounds, perspectives, and skills. * These benefits may be adjusted at Lumen Dynamics’s discretion and do not apply to our internships and exceptions to our Hybrid Working policy apply to teams with shift schedules or for folks whose roles require them to be in-office (think: Workplaces team or IT).